19902439 is an odd 8-digits composite number following 19902438
and preceding 19902440 . In scientific notation, it is written as 1.9902439 × 10^7.
The sum of its digits is 37. It has a total of 3 prime factors and 8 positive divisors.
There are 19100256 positive integers (up to 19902439) that are relatively prime to 19902439.
19902439 has 8 divisors, whose sum is 20712960
The reverse of 19902439 is 93420991
Previous prime number is 173
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 37
Digital Root 1
Name
nineteen million nine hundred two thousand four hundred thirty-nine
Scientific notation
1.9902439 × 10^7
Engineering notation
1.9902439 × 10^6
Prime Factorization
29 × 173 × 3967
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
19902439
Product of the distinct prime numbers
The prime factorization of 19902439 is 29 × 173 × 3967.
Since it has a total of 3 prime factors.
7 , 7 , 80 , 31 , 52 , 442 , 7511 , 7798 , 2807 , 36911 , 782085 , 145062 , 8909526 , 126149 , 16111400 , 86645259 , 59570871 , 386313750 , 9502046141 , 2686493722
n×2
39804878
n×3
59707317
n×4
79609756
n×5
99512195
n÷2
9951219.5
n÷3
6634146.3333333
n÷3
4975609.75
n÷5
3980487.8
n2
396107078148721
n3
7.8834969603232E+21
n4
1.5690081735952E+29
n5
3.1227089465479E+36
2 √n
4461.2149690415
3 √n
270.99967320667
4 √n
66.792327171925
5 √n
28.825792780397
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-19902438
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
1
Returns the nth root of the product of n divisors
H
Harmonic Mean
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 19902439 can be divided by 8 positive divisors.
The sum of these divisors (counting 19902439) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001011111010111111100111
3
Ternary
1101110011000101
4
Quaternary
1023322333213
5
Quinary
20043334224
6
Senary
1550324531
8
Octal
113727747
10
Decimal
19902439
12
Duodecimal
67b9747
16
Hexadecimal
12fafe7
20
Vigesimal
647g1j
36
Base36
buktj
md5
4110f919b917b4457d488ea5353faf09
sha1
d777323b27e48834659328a7bbf5c5d2a29c001c
sha256
271c82936c894d5fde08eb7557d40506af6ed7cfe265fd6ca77f28210252a633
sha512
cce521c3a3daac02a241e1e7384e51b3beab40a549bd6a2944fc16bff2eb76b5a5c0d9bc4b2553660ce4583dc59bf72ff900ce0bbca6310040ca5e2af44dcf45
ripemd-160
1de086a3d308930c98c549f06733759ab56db06c
Diameter
39804878
Circumference
125050712.30184
Area
1.2444070867469E+15
Volume
3.3022314846865E+22
Surface area
4.9776283469878E+15
Circumference
125050712.30184
Perimeter
79609756
Area
396107078148721
Diagonal
28146299.158103
Surface area
2376642468892326
Volume
7.8834969603232E+21
Space diagonal
34472035.54254
Perimeter
59707317
Area
1.7151939614781E+14
Altitude
17236017.77127
Surface area
1.7151939614781E+14
Volume
9.2907902668467E+20
Height
9382099.7193677